VARIATIONS IN PERUVIAN GUANO. 



363 



Nitrogen, from 



Phosphoric acid, " 



Sand, 



Moisture, " 



14.43 per cent, to 9.14 per cent. 

 14.01 " " 10 30' " 

 15.91 " " 0.39 

 27.18 " " 11.03 



Guanape guano, sold in the same city, was noticed to vary 

 during the same period as follows : 



Nitrogen, from 



Phosphoric acid, " 

 Sand, " 



Moisture, " 



12.88 per cent, to 8.20 per cent. 

 17.62 " " 10.77 



3.75 " " 0.75 " 

 29.96 " " 11.83 " 



[From Savannah, Ga. : Professor H. C. White, University of Georgia.] 



The following results are stated to have been obtained in 



1873:— 



Chincha Guano. 



Phosphoric acid, total, 

 Potassium oxide, . 

 Nitrogen, 

 Sand, . 



4.16 



0.54 



5.43 



21.53 



6.28 

 0.72 

 6.34 



18.72 



These samples were represented as direct importations. 



Guanape Guano — Received from the same city. 



Highest 

 result. 



Lowest 

 result. 



Phosphoric acid, total, 



Potassium oxide, . 



Nitrogen, 



Sand 



1384 

 1.23 



10.92 

 2.34 



9.21 



1.06 



7.21 



12.49 



Still, my advice, which was based upon personal observa- 

 tion in previous years, it seems displeased the general agents 

 of the Peruvian government in New York city. They com- 

 plained in a letter to me concerning the following points : 



First. I had mentioned, as an illustration of my assertion 

 regarding the existence of inferior Peruvian guano, the well- 



